133187165 has 16 divisors (see below), whose sum is σ = 162570240. Its totient is φ = 104734080.

The previous prime is 133187149. The next prime is 133187213. The reversal of 133187165 is 561781331.

133187165 = T₃₈ + T₃₉ + ... + T₉₂₇.

It is not a de Polignac number, because 133187165 - 2⁴ = 133187149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84212 + ... + 85778.

It is an arithmetic number, because the mean of its divisors is an integer number (10160640).

Almost surely, 2^133187165 is an apocalyptic number.

It is an amenable number.

133187165 is a deficient number, since it is larger than the sum of its proper divisors (29383075).

133187165 is a wasteful number, since it uses less digits than its factorization.

133187165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852.

The product of its digits is 15120, while the sum is 35.

The square root of 133187165 is about 11540.6743737097. The cubic root of 133187165 is about 510.6862030485.

The spelling of 133187165 in words is "one hundred thirty-three million, one hundred eighty-seven thousand, one hundred sixty-five".